Measurement of the dependence of the hadron production fraction ratios &lt;em&gt;f&lt;sub&gt;s&lt;/sub&gt;&lt;/em&gt;/&lt;em&gt;f&lt;sub&gt;u&lt;/sub&gt;&lt;/em&gt; and &lt;em&gt;f&lt;sub&gt;d&lt;/sub&gt;&lt;/em&gt;/&lt;em&gt;f&lt;sub&gt;u&lt;/sub&gt;&lt;/em&gt; on &lt;em&gt;B&lt;/em&gt; meson kinematic variables in proton-proton collisions at √&lt;em&gt;s&lt;/em&gt; = 13  TeV

Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Escalante Del Valle, A.; Hussain, P.S.; Jeitler, M.; Caminada, L.; Ebrahimi, A.; Erdmann, W.; Horisberger, R.; Ingram, Q.; Kaestli, H.C.; Kotlinski, D.; Lange, C.; Missiroli, M.; Noehte, L.; Rohe, T.; Zhokin, A.

doi:10.1103/PhysRevLett.131.121901

Measurement of the dependence of the hadron production fraction ratios f_s/f_u and f_d/f_u on B meson kinematic variables in proton-proton collisions at √s = 13

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Damanakis K, Dragicevic M, Escalante Del Valle A, Hussain PS, Jeitler M, Caminada L, Ebrahimi A, Erdmann W, Horisberger R, Ingram Q, Kaestli HC, Kotlinski D, Lange C, Missiroli M, Noehte L, Rohe T, Zhokin A, et al.

Citation

Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Chatterjee, S., Damanakis, K., … Zhokin, A. (2023). Measurement of the dependence of the hadron production fraction ratios f_s/f_u and f_d/f_u on B meson kinematic variables in proton-proton collisions at √s = 13 TeV. Physical Review Letters, 131(12), 121901 (18 pp.). https://doi.org/10.1103/PhysRevLett.131.121901

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:55329

The dependence of the ratio between the B⁰_s and B⁺ hadron production fractions, f_s/f_u, on the transverse momentum (p_T) and rapidity of the B mesons is studied using the decay channels B⁰_s → J/ψϕ and B⁺ → J/ψK⁺. The analysis uses a data sample of proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the CMS experiment in 2018 and corresponding to an integrated luminosity of 61.6 fb^-1. The f_s/f_u ratio is observed to depend on the B p_T and to be consistent with becoming asymptotically constant at large p_T. No rapidity dependence is observed. The ratio of the B⁰ to B⁺ meson production fractions, f_d/f_u, is also measured, for the first time in proton-proton collisions, using the B⁰ → J/ψK*⁰ decay channel. The result is found to be within 1 standard deviation of unity and independent of p_T and rapidity, as expected from isospin invariance.

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Journal Article

Title

Measurement of the dependence of the hadron production fraction ratios f_s/f_u and f_d/f_u on B meson kinematic variables in proton-proton collisions at √s = 13 TeV

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